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Green circuit board with black memory chips and gold edge connector

A-Tech

A-Tech 8GB DDR3L 1333 ECC UDIMM 2Rx8 server RAM

SKU CH-MZ7A-5MWS5

8GB DDR3L 1333MHz ECC UDIMM 2Rx8 server memory module compatible with HP part numbers 647658-081, 647909-B21, 664696-001 and 647909-B212

  • Capacity8GB
  • SpeedDDR3L 1333 (PC3L 10600)
  • CAS LatencyCL9
  • Voltage1.35V
  • ECCYes
  • Buffered/RegisteredUnbuffered
  • ECC protection guards data integrity in servers
  • DDR3L 1333 MHz CL9 2Rx8 unbuffered module
  • Low 1.35 V voltage reduces power draw
  • 240-pin UDIMM fits HP 647658-081, 647909-B21, 664696-001, 647909-B212
  • Major-brand chips tested for dependable server operation

Server Memory Upgrade

This A-Tech module provides 8 GB of DDR3L 1333 ECC unbuffered memory for compatible HP servers. It operates at 1.35 V with CL9 latency and uses a 2Rx8 rank configuration on a 240-pin DIMM. The part replaces HP part numbers 647658-081, 647909-B21, 647909-B212, and 664696-001.

Compatibility Guidance

This module suits administrators maintaining DDR3L platforms that require ECC UDIMM memory. It is not for systems limited to registered DIMMs, those needing higher-density modules, or builds requiring a different voltage or DDR generation. Verify your motherboard documentation before ordering.

Decisive Specification

The 1.35 V DDR3L voltage is the single specification that determines fitment. A standard 1.5 V DDR3 DIMM will not operate correctly in a DDR3L-only slot, and a DDR3L module may be unstable in a board that only supports 1.5 V. Match the voltage exactly to your platform requirements.

Points forts

  • ECC protection guards data integrity in servers
  • DDR3L 1333 MHz CL9 2Rx8 unbuffered module
  • Low 1.35 V voltage reduces power draw
  • 240-pin UDIMM fits HP 647658-081, 647909-B21, 664696-001, 647909-B212
  • Major-brand chips tested for dependable server operation

Caractéristiques

BrandA-Tech
Capacity8GB
SpeedDDR3L 1333 (PC3L 10600)
CAS LatencyCL9
Voltage1.35V
ECCYes
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
FeaturesMajor Brand Chips

Questions sur cet article

Does this 240-pin DDR3L UDIMM fit a standard server DIMM slot?

Yes — the module uses the 240-pin DIMM form factor and 1.35 V DDR3L signalling, so it seats in any server board that accepts unbuffered ECC DDR3L UDIMMs.

What is the correct way to seat the module, and what step do installers often miss?

Align the notch with the slot key, press straight down until both side clips click shut, then verify the system BIOS shows the full 8 GB at 1333 MHz; many forget to check the reported speed after boot.

When should this ECC UDIMM be replaced in a production server?

Replace it if the system logs correctable ECC errors that climb over time, if memory diagnostics report uncorrectable faults, or when a planned capacity upgrade requires higher-density modules.

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